Scene graph (X3D)

The engine core is a scene graph using nodes defined by the X3D specification.

Simply put, X3D (and it's older version, VRML) is a file format for 3D models.
You will find that virtually any 3D modelling program can export to it,
for exampe Blender includes
VRML and X3D exporters (and we also have our own customized exporter).

To start the fun, just create some VRML/X3D models
(or download them from the Internet, or grab our
VRML/X3D demo models)
and open them with our
view3dscene.

As a 3D file format, VRML/X3D is quite unique because it's designed
to describe virtual 3D worlds, not just static scenes.
So you can do animations, interactive behaviors (e.g. open the door
when user presses a handle), and scripting right inside the VRML/X3D file.
Many advanced graphic effects are also possible, like making
mirrors by generated (cube map or flat) textures, using GLSL shaders
and much more.

The specifications
for X3D (and older VRML) are available here.
This is your ultimate resource to learn what you can do with VRML/X3D.
The older versions were called VRML (VRML 1.0, then VRML 2.0 also
known as VRML 97). Newer versions are called X3D (3.x).
I collectively call them all VRML/X3D because our engine handles
all versions of them. You probably want to use the newest one,
X3D, whenever possible.